The high operating temperatures of photovoltaic (PV) panels negatively affect both electrical efficiency and material degradation rate. Combining a water-cooling-based photovoltaic/thermal (PV/T) system phase-change (PCM) with/without low concentration (LC) represents promising solution for boosting the overall energy conversion PV system. This approach needs to be evaluated in harsh weather wh...

The current energy requirements are mostly met by fossil fuels and non-renewable sources which depleting at rapid rate besides being emitters of greenhouse gases, so the solutions depend on renewable energy. Solar is one these clean energies, that inexhaustible has no emissions. solar radiation falling photovoltaic cells, part it converted into electrical other this heat, causes decrease in eff...

studies on hla-g, a nonpolymorphic antigen of non-classical hla class i, is of basic and clinical significance. in the present study, the expression of hla-g proteins in the human skin tissue sections of normal and autoimmune pemphigus vulgaris (pv) individuals were investigated using monoclonal antibodies. the antibodies recognized both membrane-bound and soluble isoforms of hla-g. rt-pcr was ...

This paper addresses a multiscale approach for heat recovery systems, used in two distinct applications. In both applications, microscale is (microchannel sinks and pipes) macroscale applications (cooling of photovoltaic—PV cell), the thermal energy exhaust gases an internal combustion engine thermoelectric generators with variable conductance pipes. Several experimental techniques are combined...

This paper presents the theoretical and experimental investigation on performance of a photovoltaic (PV) panel cooled by porous media under indoor condition. Porous offer large exterior surface area high fluid permeability, making them ideal for PV cells cooling. The was using 5 cm thick cooling channel filled with (gravel). Several sizes porosity (0.35, 0.4, 0.48, 0.5) at different volume flow...

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Wind energy is used to rotate a magnetic turbine in order to remove heat from the surface of a photovoltaic (PV) panel. A three-bladed turbine, which rotates with wind energy, has rotational motion underneath the studied PV panel in order to move Magnetic Nano-Particles (MNPs). In addition, effects of the magnetic field strength (B=450-830 mT), rotational velocity of the magnetic turbine (ω), a...

We have determined the number of polyoma virus (P V ) genome equivalents in PV transformed cell lines. The method used for estimation was the re­ association assay1 of denatured 3H-labelled DNA from transformed cell lines. 3H-labelled PV DNA was obtained by labelling of PV infected (polyoma wild type virus, a gift from Dr. J. Zemla, Bratislava) secondary mouse embryo cells with [6-3H] thymidine...